Respiratory System Quiz for Grade 4

What are the main parts of the respiratory system?

• Nose, trachea, bronchi, and lungs

• Kidneys, bladder, pancreas, and spleen

• Eyes, ears, mouth, and brain

• Heart, liver, stomach, and intestines

Name the organ where the process of breathing begins.

• liver

• heart

• stomach

• lungs

What is the function of the diaphragm in the respiratory system?

• It helps in pumping blood to the rest of the body

• It helps in digesting food in the stomach

• It regulates the body temperature

• It helps in the process of breathing by changing the volume of the chest cavity.

Explain the role of the trachea in the respiratory system.

• It helps in digesting food in the stomach.

• It carries blood from the lungs to the heart.

• It carries air from the throat to the lungs.

• It is responsible for producing sound in the vocal cords.

What is the main function of the lungs?

• To take in oxygen and remove carbon dioxide

• To produce insulin

• To regulate body temperature

• To digest food

How do the lungs help in the exchange of gases?

• The lungs help in the exchange of gases by producing mucus

• The lungs help in the exchange of gases by absorbing carbon dioxide

• The lungs help in the exchange of gases by releasing oxygen

• The lungs help in the exchange of gases by taking in oxygen and releasing carbon dioxide.

Why is it important to breathe in oxygen?

• To make the lungs work harder

• To help the body grow taller

• To turn into carbon dioxide

• To produce energy and carry out various functions

Explain the importance of exhaling carbon dioxide.

• To absorb oxygen from the air

• To release waste gas from the body

• To release nitrogen from the body

• To release water vapor from the body

What happens if we do not breathe properly?

• It can lead to fatigue, dizziness, and other health issues.

• It can lead to increased energy and alertness

• It can improve overall physical fitness

• It has no impact on our health

Why is it important to keep our respiratory system healthy?

• To supply oxygen to our body and ensure proper functioning.

• To supply carbon dioxide to our body

• To prevent the body from getting too much oxygen

• To make our voice sound deeper